The Ninja Sip Perfect Travel Mug is a unique product designed to enhance your drinking experience by maintaining the temperature of your beverage. This travel mug is being offered for free as part of Ninja’s sampling and feedback program. To avail of this offer, you are required to answer some questions on their webpage. If you are chosen, you will receive the mug without any payment obligations. It is important to provide accurate details for shipping notifications. Keep an eye out for new free samples to avail of more such offers.